Printing-telegraph.



Patented May l5, |900.

l2 Shee-Sheet l.

' s J. STCKERT.

PRlNTING TELEGRAPH.

Y (Application led Dec. 5, 1899.) (No Model.)

No.' 949,993. Patented may l5, |900.

.|. socKERT.

PRINTING TELEERAPH.

(Application led Dec. 5, 1899.)

(No Model.) 2 Sheets-Sheet 2.

1 M .liiillil L.

Anom s mUtairren @trarne lla'rnnir Josera s'rocKnR'r, 'on K'rnnn, GERMANY.

rainriucwctecaaen.

SPECIFICATION forming part or Letters Patent N10. 649,893, cated May 15, reco.

-Applicatlon tiled December 5, 1899. Serial No. 739,281. (No modem i To all 217mm 'it nza/ 7j concern:

Bc it known that l, JOSEPH Srocknnr, a citizen of the Kingdom of Prussia, and a resi= dent of Kthen, (whose post-office address is Holzmarkt 14,) in the Dchyof Anhalt, German Empire, have invented certain new and useful Improvements in Printing-Telegraphs, of which the following is aspecication.

The object of thc present invention is a printing-telegraph of simple construction and great capacity.

The new features of the telegraph consist in a number of self-interruptcrs in the transmit-ter and in the-receiver corresponding to the typcsof a type-writer connected With the receiver' and whose type-levers are attracted by. electromiignets excited through these self interrupters. The armatures of the self-interrupters are springs possessing all ol them the same duration of oscillation, this duration being very short-for instance, one onehundredth part of a seconde-,to allow a great number of letters to be transmitted in the shortest possible time. As for each letter the corresponding self-interrupter and all the preceding ones are excited, the duration of the oscillations of the armatures of allthese selfinterrupters has to be taken into account.

Therefore these oscillations must be of shortduration.

The system is represented in the accompanying drawings.

Figure 1 shows part of the transmitter@ Iii 2, the corresponding part of the receiver.

The type-writer keys (marked T to T6) are' shown, diagrammatically, in Fig. 1. They'are each connected by wires 1 with electromagnets of interrupters, (marked E' to Eig) there being an interrupter for each key. The'wires 1 are connected to contacts, (marked b to 126,)

and electrical connection is ,made through: these contacts with the electromagnets E El" electroniaiguet U, which is also in the circuit,

and finally the local battery B', branches 7 .cuit the contact 5 and the armature Z'.

leadingI from the wire 3 tol the Various contacts c c, with which the keys make electrical contact When pressed down. Contacts d to d are arranged to be engaged by the keys when pressed down, and these are connected with a Contact u2 ofthe interruptor U by means of a wire 8 .and branches 9. The wires 1, leading from the keys, also connect with contacts a2 a on theopposite side of the armatures F2 F from that upon which the contacts b2 b are located, and 'these contacts comprise movable members 10, which are connected through wire l1 with a local battery B2, which is also'in circuit through the wire 12 with the Wire 3 before mentioned.

When either armature F2 to F6 is operated lcltward in the drawings, the member 10 will close upon the corresponding contact a2 0,6.

The interrupters E E6, I term self-interruptcrs. The duration of oscillation of the armature A' of the interrupter U' is a little greater than those of the.self-interrupters.4

There are two line-batteries B3 B4, the line- Wire being indicated at 13 leading to the receiver (see Fig. 2) and including in its cir- The 'current from the battery B" passes to the line through the branch 14 and the contact K2, while from the battery B4 connection is made to close the movable contact member 15 upon the contact K', the former being connected by a branch 16 with the line and the latter connecting with the battery B4 by the wire 17.

At the receiver a local battery 132x is used.

`to the line only when the armature F is moved In pressing down any key at the'transmitter-say, for instance, the key 'l--the circuit of the local battery Il of the transmitter is closed through the line 3, wire 7, contact c5, Wire l, contact b5, armature F5, Wire 2, inagnet 'wire 4, Wire 3, relay R', contact u', arA

IOO

this position as long as the keA'yT5 is held down ,being thus limited to one movement,`a'nd the current from battery B passing through contacts 05.015, Wires 7 and 8, contact u2, armature A', magnet Uf, and wire 3 and holding the `armature down. The armature Z being now moved by the energizing of the magnets at relay R' contacts with 5, and thus throws the current from line-batteryBfinto the main line13. At the same timethe magnet of the self-interrupter E's attracts armature F5, thus opening contact at b5 and closing contact at a between the spring or movable member 10 and the contact a5. This closes the circuit of the second local battery B2, the current from which passes over. wire 11, contactmember 10, contact a, contact b4, and thence to electromagnet E4 by way of wire 2, the return taking'place through wire 3, relay-magnets R', and wire 12. This current from thelocal battery B2 now passes in succession through the self-interrupters which precede that of the key pressed, and it first energizes magnet E4,`

which attracts armature F4, thus interrupting the circuit at b4 and closing the circuit through movable or spring contact member 10 and contact a4. cal battery B2 through contacts at b3, wire't, to' magnet. E3, returning as before described. This action is repeated in each of theselteinterrupters E2 being energized next andswitching the current finally into the magnet'E'. ot the first interruptor. The armature of each interrupter performs one'- oscillation only.v

The Very short" impulses thus obtained all pass through theV coils of the relay R', and the armature Z' oscillates onlyonce and remains attracted to close the circuit at 5 during these 4 impulses, as itdoes not follow them owing to the longer duration of lits oscillation. Upon the energizing of the armature E' the contact 15 K' is closed by the armature F', and this' Connects the 1111e-mineur*y B4 with the .une 1.3 by way of the branch 16, and the current thus intensified passes over the line 13 tothe receiver. l

When the key T5 of the transmitter is pressed down, the armature 4Z' of thel relay R'Hof the transmitter closesV the main line at 5, and this current from battery B8 passes to the receiver, and while' this is suiiicient in strength to swing the armature Z'X of the-receiver-relay R' to close contact with K'X it is not sufficient to sendl a current through the shunt 2O owing to the resistance.' W, and thus the second receiver-relay R2* is not energized. i

The main line of the receiver is marked 13 vand its return connection is indicated at 13'.

The movement just mentioned of' the armature Z'X of the receiver-relay B'X 1s synchro- The current now passes from the lo-V vand battery B'X.

nous with that of the armature F4 ofthe trans'- mitter.

`When the contact at K' is closed. by the armature Z' of.the receiver-relay R'X, the receiver local battery B' is thrown into circuit and the current passes through the contact K'X, the armature Z'X, the armature A' of the'receiVer-interrupterU'X, by way of Wire 21, through contact u'x, wire 22, contact 02X, and wire 23 to the magnet of the -first interruptor E2X of the receiver, and thence by return-wire 21 back to the magnet of the interrupter U' and to the battery B'X. The magnets at E2 and U'X are -thus energized and attract their armatures F2 and -A'.X, 'respectively. .F2 closes the spring-contact at LPX, comprising the movable member 25 and the fixed member26. The current from battery B' of the receiver now passes through these and thence to the contact at cSX.. This contact cSX, as well as the cbn'tact 02X before mentioned, is similar to the contact at dix, comprsing a fixed and a movable contact-point,

which is held closed by the armature and is adapted to open automatically when relieved from pressure of the armature. When contact at @2X is closed, therefore, the contact. at @X opens. The closing of thecontact at 09X enables the current to fiow from battery B' through K'X, wire 27, and a second branch wire 23 through the magnet at E3X and thence by way of line 24 and magnet U' back to the` battery. The armature A' is held downon the contact 'aix as long as the armature Z' of the first relay R'X of the receiver remains in deflection, as a complete circuit is maintained through the armature Z'.X, line 21, ar-

'mature A'X, contact u, wire29, magnet U'X, Fromthe above it will be seen that the current from battery B'X is switched from o ne interrupter to another in succession, beginning with the first, then the second, and so on, or in a direction reverse from thatin the transmitter, where the first one is, for instance, E5, then E4, and so on back ,to thefirst, E'. As soon as the current from the local battery B2 of the transmitter has been se'nt through the first interrupter of n.5

the transmitterthe armature F' is operated and switches the s'econ'd battery B4 into th main line,- and the main-line current thus intensified is able to overcome the resistance \V,placed in the shunt 20 in front of the sec'- ond relay H2X ot' the receiver, and the armature Zix ofthe ,latter is now attracted and closes. the circuit at K25. At the moment 4that the armature F5 l is swung by reason of the current flowing from the battery B'X, as

lbefore described, through the armature Z of the first receiver-relay, which remains in defiection, and at the moment, therefore, that the contact 'at b5 is closed by swinging movement of the armature' Fx the current will pass Afrom the second4 local battery through the wire Ba, the contactat' KP of the second relay, through the armature ZW, the wire 30, the contact ci, wires 31 and 32, contact Zx, wire 33, and thence to the magnet S5 of the lever of the type-Writer corresponding to the key 'l5 at the transmitting-station.

The contacts asx and ZFX of Fig. 2 are springcontacts and close on pressure being exerted. Fig. 2 represents the armature FU closing the contact at CLGX, because the said armature is swung to the left. This closes the connection'between the wire 30, leading from the battery'connection B2X described to the Wire 3l, which through the Wire 32 connects with the contact b5", which is shown as open, but which is closed as soon as the armature F5X swings to the right upon the energizing of the magnet E, as above described.

Each interrupter or" the receiver has a Wire, as 8l 32, and they have also wires 30', which form connections for receiving current from the battery Bix. For instance, when F4 is the last interrupter to be operated the cur-v rent from the battery 152x after passing through wire 30, contact c, and Wire 31 of the interrupter E6 would pass by way of Wire 30', contact cx, and Wire 3l of interrupter E, and thence by Way of wire 32 and contact 54X of interrupter E4Xto the lever-oper ating magnet Si'.

I claim as my invention-V In a printing-telegraph, the combination of a transmitter comprising the key battery B', a series of self-interrupters, contacts controlled by each key with connections for sending the current from the bata local Y tery B" through the corresponding interrupter, a relay R for closing contacts in the main line, -thelnagnets of said relay being in the circuit of the battery B and with the keys and self-interrupter, an interrupter U of the first 'interrupter to intensify the curdf rent in the main line, and a receiver, comprising a relay inthe main line, a local battery controlled thereby, connections `from said batteryto a series of self-interrupters for operating'and sending a current through them in succession, an interrupter U'X, a second relay in a shunt of the main line, .a re sistance" in front of said relay, the magnets Ifor the -levers of the type-Writer, and al sec-4 ond local battery in circuit with the second relay, themagnets, and with contacts controlled by the armatures of the interrupters. vIn testimony whereof I affix my signature in presence of two witnesses.

J OSEPII STOCKERT.- l

Witnesses:

.HENRY HASPER,

WOLDEMAR HAUPT. 

